Conversely, control mice exhibited higher abundances of taxa such as phylum Deferribacterota (including genus Mucispirillum), Rikenilla, Alloprevotella and Altistipes which are negatively correlated with AD and tau protein in brain (Shen et al. 2017; Hung et al. 2022; Troci et al. 2023). Here, MAPT is linked to Alzheimer disease.